Andean Gull vs Black-naped Tern
Larus serranus compared with Sterna sumatrana
Side-by-Side Comparison
| Attribute | Andean Gull | Black-naped Tern |
|---|---|---|
| Scientific Name | Larus serranus | Sterna sumatrana |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 70.6 cm (27.8 in) | 43.1 cm (17.0 in) |
| Weight | 478.0 g (16.86 oz) | 103.75 g (3.66 oz) |
| Diet | -- | -- |
| Clutch Size | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Andean Gull
Least Concern
Black-naped Tern
About These Birds
Andean Gull
Andean Gull, 45–48 cm, breeds at high-altitude Andean lakes from Colombia to Argentina, typically above 3000 m. Black hood in breeding plumage; white below with grey mantle. Largely insectivore, following cattle or foraging at lake edges. Partial altitudinal migrant descending to Pacific and Atlantic coasts in winter.
Black-naped Tern
Black-naped Tern, 30–32 cm, breeds on tropical Indo-Pacific coral islands from the Maldives to Polynesia. White overall with a narrow black nape band connecting the black lores — a delicate, elegant pattern. Piscivore; surface-dips and shallow dives in clear tropical waters over reefs.